Home / 1,144.42-1,579.29-620.44

Finding the Fourth Proportional to 1,144.42, 1,579.29 and 620.44

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Solution

The fourth proportional to 1,144.42, 1,579.29 and 620.44 is: 856.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.42 : 1,579.29 = 620.44 : x
  2. Step 2: Convert to fraction form
    1,144.42/1,579.29 = 620.44/x
  3. Step 3: Cross multiply
    1,144.42x = 1,579.29 × 620.44
  4. Step 4: Simplify right side
    1,144.42x = 979,854.69
  5. Step 5: Solve for x
    x = 979,854.69/1,144.42
  6. Step 6: Final answer
    x = 856.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.